86 
THE SEAWEEDS 
1. Variegately pale-brown Q variegatus 
(Lamour.) J. Agardh. 
2. Very dark, turning black on exposure or drying G. uigrescens 
(Sond.) J. Agardh. 
ZONARIA (Draparn.) J. Agardh. 
rond stipitate, flabellate, decumbent below 7 . Spores (oogonia ) nidu- 
lating under a hyaline indusium. Tetraspores and antheridia not observed. 
1. Frond to 5 cm. high, stupose on under-surface, 
cuneate-flabellate. In colour and substance 
it resembles Gymnosorus variegatus .... Z. Diesingiana 
2. Frond rather erect, a few 7 cm. high, branching i 2 3 4 ^-^ arc ^ 1 - 
with cuneate-flabellate segments. Margins 
coarsely crenate. Sori not seen Z. crenata 
3. Erect, stem terete or wdnged, 10 to 15 cm. high, J. Agardh. 
much divided, in general outline flabellate. 
Branches ending in deeply parted, basally 
woolly laminae, w r hose segments are narrow- 
linear, truncate, sparingly toothed or 
incised. Sori oblong, scattered . Z. Tumeriana 
J. Agardh. 
West and south coasts of Australia, Tasmania, New Zealand. 
HOMOEOSTRICHUS J. Agardh. 
h ronds erect with strongly stupose stems. Ultimate divisions fan-shaped. 
Sori prominent, the spores naked accompanied with paraphyses. Pleio- 
stromatic. 
1. Stem terete, slender, brown, woolly (stupose), 
much branched. Branches ending in narrow 
wedge-shaped Hat segments free from 
stupa. Sori oblong or linear, directed 
longitudinally. 10 to 13 cm. high .. .. H. Sinclairii (H. and 
The eastern species, New South Wales and New IT.) J. Agardh. 
Zealand. 
2. As in preceding, but shaggy with brown wool 
(stupa) to the upper segments 
South Australia and Victoria. 
3. Segments very narrow, linear, channelled 
South Australia and Victoria. 
4. All branches twisted in a regular spiral 
Western and South Australia. 
H. stuposus 
(R. Br.) J. Agardh. 
II. canaliculatus 
J. Agardh. 
IT . spiralis 
J. Agardh. 
